/**
 * Copyright (c) 2010 Yahoo! Inc. All rights reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License. See accompanying LICENSE file.
 */
package org.apache.oozie.action.hadoop;

import org.apache.hadoop.mapred.JobClient;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.security.token.delegation.DelegationTokenIdentifier;
import org.apache.hadoop.security.token.Token;
import org.apache.oozie.action.hadoop.AuthHelper;

import java.io.IOException;

public class KerberosAuthHelper extends AuthHelper {

    public void set(JobClient jobClient, JobConf launcherJobConf) throws IOException, InterruptedException {
        Token<DelegationTokenIdentifier> mrdt = jobClient.getDelegationToken(new Text("mr token"));
        launcherJobConf.getCredentials().addToken(new Text("mr token"), mrdt);
    }

}
